Higgs production in heavy quark annihilation through next-to-next-to-leading order QCD

Abstract

The total inclusive cross section for charged and neutral Higgs production in heavy-quark annihilation is presented through NNLO QCD. It is shown that, aside from an overall factor, the partonic cross section is independent of the initial-state quark flavors, and that any interference terms involving two different Yukawa couplings vanish. A simple criterion for defining the central renormalization and factorization scale is proposed. Its application to the $b\bar{b}H$ process yields results which are compatible with the values usually adopted for this process. Remarkably, we find little variation in these values for the other initial-state quark flavors. Finally, we disentangle the impact of the different parton luminosities from genuine hard NNLO effects and find that, for the central scales, a naive rescaling by the parton luminosities approximates the full result remarkably well.

21 pages, 7 figures, 1 table. Matches published version

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• Measurements of the Higgs boson inclusive and differential fiducial cross-sections in the diphoton decay channel with $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
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• Impact of CP-violating interference effects on MSSM Higgs searches
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• Phenomenology of on-shell Higgs production in the MSSM with complex parameters
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• R-Parity Violating Supersymmetry and the 125 GeV Higgs signals
• Search for $\gamma$H production and constraints on the Yukawa couplings of light quarks to the Higgs boson